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Can DHCP for PXE co-exist on the same network with another DHCP server?

Posted on 2009-05-12
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Last Modified: 2012-05-06
I am trying to setup a Linux-based Spacewalk (open source RedHat Satellite Server) server that will handle only restricted MAC address PXE clients via DHCP on the network. The problem is there is already an existing Windows-based DHCP server on the same network that I do not have access to.

The reason for the restricted PXE/DHCP network is so that once the requesting client's MAC address is checked against the DHCP scope, an IP is assigned to the PXE client and the client will then connect the Spacewalk server and automatically start the kickstart/install process. If the MAC address is not listed in the scope, the PXE DHCP server will ignore it and not respond to the requesting client as finding a authenticated DHCP server.

Is there a way to have the Linux DHCP server only assign IPs to those with a verified MAC address in the DHCP scope and ignore all other DHCP requests from the network -- i.e. Microsoft Window PCs, etc?

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Question by:Michael Worsham
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Kerem ERSOY earned 1500 total points
ID: 24369034
Since there's already another DHCP server on your network if you run another one they will cancel out themselves and you'll stay there with no DHCP servers. Also if you're using active directory on your windows server shutting down might impact your windows networking too. The best solution I can think of is:
- Enter MAC based address assignment in Windows Server.
- Configure you Linux Spacewalk server as DHCP Relay so that It will know about the assignments.

Another solution would be to equip your Linux server with two ethernet cards  and use DHCP only for the second interface, your intranet. Distribute addresses and PXE to this interface and use NAT to translate these addresses to your internal network using the first interface.
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